我無法在 Blazor（服務(wù)器端）上為登錄用戶（cookie 身份驗證）創(chuàng)建功能 對于簡單的示例，創(chuàng)建一些代碼：@using Microsoft.AspNetCore.Http;@using Microsoft.AspNetCore.Authentication;@using Microsoft.AspNetCore.Authentication.Cookies;@using System.Security.Claims;@inject IHttpContextAccessor _httpContextAccessor@inject NavigationManager UriHelper<form class="form-group">    <input class="form-control" @bind="Name" type="text" />    <input class="form-control" @bind="Password" type="password" />    <button type="button" @onclick="@(()=>SbmForm())" class="btn btn-light">Sbm</button>   </form>@code{    [Parameter]    public string Name { get; set; }    public string Password { get; set; }      public async Task SbmForm()    {        if (!String.IsNullOrEmpty(Name))        {            var claims = new[] { new Claim(ClaimTypes.Name, Name),                new Claim(ClaimTypes.Role, "Admin") };            var identity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);            try            {                await _httpContextAccessor.HttpContext.SignInAsync(                  CookieAuthenticationDefaults.AuthenticationScheme,                  new ClaimsPrincipal(identity),                  new AuthenticationProperties                  {                      IsPersistent = true                  });            }            catch(Exception e)            {                Console.WriteLine(e.Message);            }            UriHelper.NavigateTo("/counter");        }    }}我收到異常“無法修改響應(yīng)標(biāo)頭，因為響應(yīng)已經(jīng)開始?！?在代碼“await _httpContextAccessor.HttpContext.SignInAsync...”上我需要做什么？